A lot of people have this theory at least I think they do, that because it's a water fowl it can tolerate water, Well what they don't understand is when they are in that shell they have NOT developed the correct usage of using there lungs yet. so to much water is going to kill them. It's best to have a Shrink wrapped egg over a sticky egg (If normal hatching isn't a choice) LOL
I have to say i love this title of this forum. Because we were dealing with JUST the opposite. LOL.. When they get sticky they are literally STUCK in that egg, they usually either give up OR sufficate. They can't remove that gooy stuff it's almost like super glue. When it dries up it's HARD as a rock... YEK, cleaning them off is the only way but it must be warm water otherwise they will get cold, you don't want them cold.... decreases there heart rate and makes them very very weak.. Keep them warm is the KEY for all Hatchings...
PLUS there are a lot of sites that say 80 to 90 but what people are NOT reading is this number is for Wet bulb, Most of us do not use a wet bulb, we simply go to walmart or whereever and get a regular gage which the readings are NOT going to be that high..
So as long as humidity is down, you'll be OK, also keep an eye on the readings they will CHANGE, as the weather changes....